METHOD OF ENCRYPTING N-BIT UNIT M Russian patent published in 2014 - IPC G09C1/00 H04L9/00 

FIELD: radio engineering, communication.

SUBSTANCE: method of encrypting an n-bit data unit M includes generating a secret key by generating subkeys Q and R and auxiliary subkeys in form of mutually simple multi-bit binary numbers m₁ and m₂, generating an auxiliary n-bit data unit T, generating an n-bit auxiliary cryptogram C_M by performing a block encryption operation E over the M depending on Q using the formula C_M=E_Q(M), generating n-bit auxiliary cryptograms C_T by performing a block encryption operation E over T depending on R using the formula C_T=E_R(T), generating a cryptogram C in form of a solution of a system of two identities C≡C_Mmodm₁ and C≡C_Tmodm₂ with unknown C. In a particular version of the method, m₁ and m₂ are prime numbers.

EFFECT: high level of security of information encrypted using said method.

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